Eirdu, Carrier of Dawn
Mikaeus, the Unhallowed
Altar of Dementia

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Eirdu as Isilu, Carrier of Twilight on the battlefield).
You control another nontoken non-Human creature with base toughness 2 or greater.

   Steps

How does this combo work?
1
Activate Altar of Dementia by sacrificing another nontoken non-Human creature
2
When the creature dies, its undying ability triggers, returning the creature from your graveyard to the battlefield with a +1/+1 counter on it.
3
Activate Altar of Dementia by sacrificing the creature with a +1/+1 counter on it.
4
When the creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5
Resolve the Altar of Dementia abilities from step 1 and 3.
6
Repeat.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Infinite sacrifice triggers
Infinite death triggers
Infinite mill
Infinite self-mill
Eirdu, Carrier of Dawn
21%inclusion139 decks648 decks
Top Commanders
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New Cards
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26%synergy
Emptiness
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24%synergy
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13%synergy
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14%inclusion1 decks7 decks
14%synergy
Redirect Lightning
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10%synergy
High Synergy Cards
Murderous Redcap
100%inclusion7 decks7 decks
98%synergy
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88%inclusion137 decks156 decks
81%synergy
Goblin Bombardment
86%inclusion6 decks7 decks
80%synergy
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83%inclusion130 decks156 decks
80%synergy
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71%inclusion5 decks7 decks
71%synergy
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71%inclusion5 decks7 decks
71%synergy
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71%synergy
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70%synergy
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65%synergy
Zulaport Cutthroat
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64%synergy
Top Cards
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62%synergy
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58%synergy
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8%synergy
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62%synergy
Carrion Feeder
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60%synergy
Luminous Broodmoth
63%inclusion99 decks156 decks
61%synergy
Warren Soultrader
62%inclusion97 decks156 decks
57%synergy
Cathars' Crusade
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56%synergy
Geralf's Messenger
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57%synergy
Dark Ritual
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34%synergy
Game Changers
Demonic Tutor
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28%synergy
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Teferi's Protection
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7%synergy
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8%synergy
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9%synergy
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5%synergy
Necropotence
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7%synergy
Chrome Mox
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4%synergy
Creatures
Glen Elendra Archmage
100%inclusion3 decks3 decks
98%synergy
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55%inclusion86 decks156 decks
52%synergy
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52%inclusion81 decks156 decks
49%synergy
Solemn Simulacrum
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38%synergy
Marionette Apprentice
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43%synergy
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44%synergy
Corpse Knight
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40%synergy
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43%synergy
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43%synergy
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43%synergy
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43%inclusion3 decks7 decks
42%synergy
Scurry Oak
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41%synergy
Wight of the Reliquary
43%inclusion3 decks7 decks
37%synergy
Sakura-Tribe Elder
43%inclusion3 decks7 decks
26%synergy
Sephiroth, Fabled SOLDIER
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39%synergy
Gray Merchant of Asphodel
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32%synergy
Midnight Reaper
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37%synergy
Witch Enchanter
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33%synergy
Morbid Opportunist
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29%synergy
Esper Sentinel
35%inclusion54 decks156 decks
15%synergy
Bartolomé del Presidio
34%inclusion53 decks156 decks
29%synergy
Lotho, Corrupt Shirriff
34%inclusion53 decks156 decks
21%synergy
Woe Strider
33%inclusion51 decks156 decks
31%synergy
Butcher Ghoul
32%inclusion50 decks156 decks
32%synergy
Vizier of Remedies
28%inclusion44 decks156 decks
28%synergy
Charismatic Conqueror
27%inclusion42 decks156 decks
24%synergy
Elenda, the Dusk Rose
27%inclusion42 decks156 decks
21%synergy
Sun Titan
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17%synergy
Pawn of Ulamog
25%inclusion39 decks156 decks
23%synergy
Teysa Karlov
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20%synergy
Welcoming Vampire
21%inclusion33 decks156 decks
15%synergy
Junji, the Midnight Sky
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18%synergy
Loran of the Third Path
19%inclusion30 decks156 decks
12%synergy
Zack Fair
18%inclusion28 decks156 decks
16%synergy
Yahenni, Undying Partisan
18%inclusion28 decks156 decks
15%synergy
Boromir, Warden of the Tower
18%inclusion28 decks156 decks
14%synergy
Syr Konrad, the Grim
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9%synergy
Vengeful Bloodwitch
17%inclusion26 decks156 decks
15%synergy
Accursed Marauder
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11%synergy
Solitude
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14%synergy
Grand Abolisher
15%inclusion24 decks156 decks
6%synergy
Enduring Innocence
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11%synergy
Braids, Arisen Nightmare
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8%synergy
Karmic Guide
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11%synergy
Selfless Spirit
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10%synergy
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13%inclusion21 decks156 decks
8%synergy
Voice of Victory
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7%synergy
Guardian of Faith
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10%synergy
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11%synergy
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10%synergy
Instants
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29%synergy
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5%synergy
Deadly Dispute
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33%synergy
Deflecting Swat
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26%synergy
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12%synergy
Generous Gift
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14%synergy
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35%inclusion54 decks156 decks
25%synergy
Fell the Profane
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21%synergy
Flare of Fortitude
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25%synergy
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18%synergy
Deadly Rollick
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Reprieve
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Flare of Malice
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Saw in Half
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4%synergy
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4%synergy
Fracture
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2%synergy
Stroke of Midnight
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-3%synergy
Cabal Ritual
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2%synergy
Entomb
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0%synergy
Cauldron Haze
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5%synergy
Duty Beyond Death
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4%synergy
Ephemerate
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-1%synergy
Dawn's Truce
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-2%synergy
Sorceries
Three Visits
57%inclusion4 decks7 decks
33%synergy
Nature's Lore
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26%synergy
Diabolic Intent
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38%synergy
Kodama's Reach
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15%synergy
Farseek
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Cultivate
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0%synergy
Victimize
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27%synergy
Damn
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24%synergy
Reanimate
39%inclusion61 decks156 decks
20%synergy
Toxic Deluge
33%inclusion52 decks156 decks
15%synergy
Night's Whisper
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8%synergy
Blasphemous Edict
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6%synergy
Austere Command
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-1%synergy
Agadeem's Awakening
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7%synergy
Living Death
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4%synergy
Sevinne's Reclamation
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2%synergy
Sign in Blood
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1%synergy
Farewell
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-3%synergy
Torment of Hailfire
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5%synergy
Wrath of God
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3%synergy
Grim Tutor
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3%synergy
Read the Bones
6.4%inclusion10 decks156 decks
0%synergy
Damnation
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0%synergy
Beseech the Mirror
5.8%inclusion9 decks156 decks
3%synergy
Vindicate
5.8%inclusion9 decks156 decks
0%synergy
Exsanguinate
5.8%inclusion9 decks156 decks
-1%synergy
Pitiless Carnage
5.1%inclusion8 decks156 decks
5%synergy
Persist
5.1%inclusion8 decks156 decks
3%synergy
Buried Alive
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-1%synergy
Feed the Swarm
5.1%inclusion8 decks156 decks
-11%synergy
Utility Artifacts
The Great Henge
57%inclusion4 decks7 decks
48%synergy
Skullclamp
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44%synergy
Blasting Station
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44%synergy
Lightning Greaves
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19%synergy
Swiftfoot Boots
25%inclusion39 decks156 decks
-2%synergy
Oketra's Monument
13%inclusion21 decks156 decks
12%synergy
The One Ring
12%inclusion19 decks156 decks
4%synergy
Spawning Pit
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11%synergy
Jet Medallion
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5%synergy
Altar of the Brood
7.7%inclusion12 decks156 decks
7%synergy
Archaeomancer's Map
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4%synergy
Mithril Coat
6.4%inclusion10 decks156 decks
2%synergy
Cauldron of Souls
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5%synergy
Pearl Medallion
5.1%inclusion8 decks156 decks
3%synergy
Wayfarer's Bauble
5.1%inclusion8 decks156 decks
-3%synergy
Enchantments
Solemnity
57%inclusion89 decks156 decks
56%synergy
Bastion of Remembrance
57%inclusion89 decks156 decks
51%synergy
Impact Tremors
43%inclusion3 decks7 decks
33%synergy
The Meathook Massacre
40%inclusion63 decks156 decks
35%synergy
Black Market Connections
39%inclusion61 decks156 decks
27%synergy
Grave Pact
38%inclusion60 decks156 decks
34%synergy
Phyrexian Arena
37%inclusion57 decks156 decks
21%synergy
Bitterblossom
34%inclusion53 decks156 decks
30%synergy
Thran Vigil
28%inclusion44 decks156 decks
28%synergy
Sothera, the Supervoid
13%inclusion20 decks156 decks
12%synergy
Land Tax
11%inclusion17 decks156 decks
4%synergy
Funeral Room // Awakening Hall
10%inclusion16 decks156 decks
9%synergy
Dictate of Erebos
9.0%inclusion14 decks156 decks
6%synergy
Animate Dead
9.0%inclusion14 decks156 decks
0%synergy
Fanatical Devotion
8.3%inclusion13 decks156 decks
8%synergy
Martyr's Cause
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7%synergy
Phyrexian Unlife
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5%synergy
Barrensteppe Siege
5.1%inclusion8 decks156 decks
3%synergy
Trouble in Pairs
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0%synergy
Planeswalkers
Liliana, Dreadhorde General
20%inclusion31 decks156 decks
16%synergy
Utility Lands
Mistrise Village
100%inclusion3 decks3 decks
92%synergy
Phyrexian Tower
59%inclusion92 decks156 decks
50%synergy
Urborg, Tomb of Yawgmoth
38%inclusion60 decks156 decks
29%synergy
Bojuka Bog
38%inclusion59 decks156 decks
8%synergy
High Market
29%inclusion46 decks156 decks
27%synergy
Takenuma, Abandoned Mire
28%inclusion43 decks156 decks
19%synergy
Reliquary Tower
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-6%synergy
Cabal Coffers
21%inclusion32 decks156 decks
11%synergy
Eiganjo, Seat of the Empire
19%inclusion29 decks156 decks
11%synergy
Susur Secundi, Void Altar
17%inclusion26 decks156 decks
14%synergy
Midgar, City of Mako
15%inclusion23 decks156 decks
11%synergy
Westvale Abbey
13%inclusion20 decks156 decks
11%synergy
Vault of the Archangel
13%inclusion20 decks156 decks
1%synergy
Nesting Grounds
11%inclusion17 decks156 decks
9%synergy
Spymaster's Vault
10%inclusion16 decks156 decks
8%synergy
Command Beacon
8.3%inclusion13 decks156 decks
3%synergy
Nykthos, Shrine to Nyx
7.7%inclusion12 decks156 decks
2%synergy
Urza's Saga
7.7%inclusion12 decks156 decks
1%synergy
Shizo, Death's Storehouse
5.8%inclusion9 decks156 decks
1%synergy
Mana Artifacts
Sol Ring
91%inclusion142 decks156 decks
7%synergy
Arcane Signet
85%inclusion132 decks156 decks
12%synergy
Talisman of Hierarchy
67%inclusion104 decks156 decks
40%synergy
Talisman of Conviction
57%inclusion4 decks7 decks
33%synergy
Talisman of Indulgence
57%inclusion4 decks7 decks
29%synergy
Orzhov Signet
50%inclusion78 decks156 decks
26%synergy
Fellwar Stone
28%inclusion43 decks156 decks
7%synergy
The Soul Stone
19%inclusion30 decks156 decks
15%synergy
Mind Stone
19%inclusion30 decks156 decks
4%synergy
Thought Vessel
15%inclusion23 decks156 decks
-3%synergy
Lotus Petal
10%inclusion15 decks156 decks
3%synergy
Mana Vault
9.0%inclusion14 decks156 decks
3%synergy
Mox Diamond
5.8%inclusion9 decks156 decks
1%synergy
Crowded Crypt
5.1%inclusion8 decks156 decks
4%synergy
Lands
Hallowed Fountain
100%inclusion3 decks3 decks
61%synergy
Watery Grave
100%inclusion3 decks3 decks
59%synergy
Command Tower
86%inclusion134 decks156 decks
12%synergy
Savai Triome
86%inclusion6 decks7 decks
61%synergy
Godless Shrine
83%inclusion129 decks156 decks
42%synergy
Isolated Chapel
74%inclusion116 decks156 decks
41%synergy
Indatha Triome
71%inclusion5 decks7 decks
43%synergy
Temple Garden
71%inclusion5 decks7 decks
33%synergy
Overgrown Tomb
71%inclusion5 decks7 decks
31%synergy
Caves of Koilos
65%inclusion102 decks156 decks
36%synergy
Vault of Champions
63%inclusion98 decks156 decks
38%synergy
Shattered Sanctum
61%inclusion95 decks156 decks
46%synergy
Sacred Foundry
57%inclusion4 decks7 decks
21%synergy
Blood Crypt
57%inclusion4 decks7 decks
20%synergy
Marsh Flats
56%inclusion88 decks156 decks
46%synergy
Fetid Heath
54%inclusion85 decks156 decks
42%synergy
Bleachbone Verge
54%inclusion84 decks156 decks
46%synergy
Tainted Field
46%inclusion72 decks156 decks
33%synergy
Shadowy Backstreet
45%inclusion70 decks156 decks
35%synergy
Brightclimb Pathway
43%inclusion67 decks156 decks
34%synergy
Sulfurous Springs
43%inclusion3 decks7 decks
20%synergy
Sandsteppe Citadel
43%inclusion3 decks7 decks
17%synergy
Sunpetal Grove
43%inclusion3 decks7 decks
16%synergy
Battlefield Forge
43%inclusion3 decks7 decks
15%synergy
Woodland Cemetery
43%inclusion3 decks7 decks
12%synergy
Shineshadow Snarl
35%inclusion55 decks156 decks
23%synergy
Exotic Orchard
29%inclusion45 decks156 decks
-7%synergy
Silent Clearing
28%inclusion43 decks156 decks
23%synergy
Concealed Courtyard
24%inclusion37 decks156 decks
18%synergy
Orzhov Basilica
23%inclusion36 decks156 decks
8%synergy
Fabled Passage
22%inclusion35 decks156 decks
13%synergy
Scrubland
19%inclusion29 decks156 decks
5%synergy
Temple of Silence
19%inclusion29 decks156 decks
1%synergy
Desolate Mire
17%inclusion26 decks156 decks
11%synergy
Flooded Strand
16%inclusion25 decks156 decks
5%synergy
Arid Mesa
14%inclusion22 decks156 decks
4%synergy
Prismatic Vista
13%inclusion21 decks156 decks
9%synergy
Verdant Catacombs
13%inclusion21 decks156 decks
3%synergy
Polluted Delta
13%inclusion21 decks156 decks
1%synergy
Bloodstained Mire
13%inclusion20 decks156 decks
2%synergy
Windswept Heath
12%inclusion19 decks156 decks
1%synergy
Reflecting Pool
11%inclusion17 decks156 decks
6%synergy
Sunlit Marsh
8.3%inclusion13 decks156 decks
4%synergy
Evolving Wilds
8.3%inclusion13 decks156 decks
-12%synergy
Mana Confluence
7.7%inclusion12 decks156 decks
1%synergy
City of Brass
7.7%inclusion12 decks156 decks
0%synergy
Cavern of Souls
6.4%inclusion10 decks156 decks
-1%synergy
Terramorphic Expanse
6.4%inclusion10 decks156 decks
-9%synergy
Myriad Landscape
5.8%inclusion9 decks156 decks
-11%synergy
Snowfield Sinkhole
5.1%inclusion8 decks156 decks
3%synergy